PayPal Standard not showing as available payment method

Hi,

I've installed v2 update patch and all is working well, except my PayPal Standard payment method.
I've configured all as per documentation http://docs.opencart.com/
And configured the module in Admin. I set the minimum checkout amount to: 0

However, this payment option never shows up in the actual payment options when checking out.
see attachment.

The other payment options work fine.

Anything ideas what I should check to get this to work?

Set your minimum checkout amount to 0.01. Otherwise it will only show if the cart total is $0.00.